Feed tube



FIG. 1 is a perspective view of a feed tube embodying the new design;

FIG. 2 is a front view thereof, the rear view being a mirror image;

FIG. 3 is a right side view thereof, the left side view being a mirrorimage;

FIG. 4 is a top view thereof; and,

FIG. 5 is a bottom view thereof.

CLAIM The ornamental design for a feed tube, as shown.